att.get.nc {RNetCDF} | R Documentation |
Get an attribute from a NetCDF dataset.
att.get.nc(ncfile, variable, attribute)
ncfile |
Object of class " |
variable |
ID or name of the variable from which the attribute will be read, or |
attribute |
Attribute name or ID. |
This function returns the value of the attribute.
A vector of type character
if the on-disk type is NC_CHAR
, otherwise numeric
. No distinction is made between the different storage types of numeric objects.
NC_BYTE
is always interpreted as signed.
Pavel Michna
http://www.unidata.ucar.edu/software/netcdf/
## Create a new NetCDF dataset and define two dimensions nc <- create.nc("att.get.nc") dim.def.nc(nc, "station", 5) dim.def.nc(nc, "time", unlim=TRUE) ## Create two variables, one as coordinate variable var.def.nc(nc, "time", "NC_INT", "time") var.def.nc(nc, "temperature", "NC_DOUBLE", c(0,1)) ## Put some attributes att.put.nc(nc, "temperature", "missing_value", "NC_DOUBLE", -99999.9) att.put.nc(nc, "temperature", "long_name", "NC_CHAR", "air temperature") att.put.nc(nc, "NC_GLOBAL", "title", "NC_CHAR", "Data from Foo") att.put.nc(nc, "NC_GLOBAL", "history", "NC_CHAR", paste("Created on", date())) ## Get these attributes att.get.nc(nc, "temperature", "missing_value") att.get.nc(nc, "temperature", "long_name") att.get.nc(nc, "NC_GLOBAL", "title") att.get.nc(nc, "NC_GLOBAL", "history") close.nc(nc)